Home / 1,390,521.50-1,918,919.67-754,617.50

Finding the Fourth Proportional to 1,390,521.50, 1,918,919.67 and 754,617.50

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Solution

The fourth proportional to 1,390,521.50, 1,918,919.67 and 754,617.50 is: 1,041,372.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,390,521.50 : 1,918,919.67 = 754,617.50 : x
  2. Step 2: Convert to fraction form
    1,390,521.50/1,918,919.67 = 754,617.50/x
  3. Step 3: Cross multiply
    1,390,521.50x = 1,918,919.67 × 754,617.50
  4. Step 4: Simplify right side
    1,390,521.50x = 1,448,050,364,076.23
  5. Step 5: Solve for x
    x = 1,448,050,364,076.23/1,390,521.50
  6. Step 6: Final answer
    x = 1,041,372.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.